噪声与振动控制2025，Vol.45Issue(3)：228-235,8.DOI:10.3969/j.issn.1006-1355.2025.03.036
双线列车移动荷载作用下饱和地基振动响应特性分析
Analysis of Vibration Response Characteristics of Saturated Foundation under Moving Load of Double-track Trains
摘要
Abstract
The displacement and ultra pore pressure of the saturated foundation are significant since the foundation is subjected to the high intensity and longstanding intersection load of the double-track high-speed trains.Based on the Biot wave propagation equation of saturated porous medium,a 2.5 dimensional finite element model of double-track train-satu-rated foundation was established.The load program of the double-track train was compiled by Fortran language.The vibra-tion responses of the track center and the saturated foundation under four operating conditions of double-track and single-track train were analyzed by applying the load to the track which was simplified to the Euler beam.Result shows that:the vi-bration wave is reinforced due to the superposition of the load vibrations of the double-track train,resulting in the vertical ac-celeration and displacement of the track center increasing by about 1 time compared with the single-track condition,and the peak value of displacement appears at the position of 1m from the center of the track.There is a vibration amplification sec-tion in the saturated foundation of single-track and double-track conditions within 10 m from the center of the track.The vi-bration attenuates rapidly within 10 m while slowly beyond 10 m.The peak value of ultra pore pressure of double-track train increases by about 1 time compared with the single-track condition.The ultra pore pressure increases suddenly,then decreas-es rapidly and attenuates gradually with the increase of depth,and the peak value of ultra pore pressure appears at 1.5 m be-neath the foundation surface.关键词
振动与波/双线列车/饱和地基/2.5D有限元/振动响应/超静孔隙水压力Key words
vibration and wave/double-track trains/saturated foundation/2.5D FEM/dynamic response/ultra pore water pressure分类
交通工程引用本文复制引用
高盟,李佳文,李丹阳..双线列车移动荷载作用下饱和地基振动响应特性分析[J].噪声与振动控制,2025,45(3):228-235,8.基金项目
山东省自然科学基金面上资助项目(ZR2021ME144) （ZR2021ME144）
